Shop for KYDEX® T Thermoplastic Sheet for O&P. KYDEX® T Sheet for O&P is used by fabricators in the orthotics industry for neck braces, body jackets, back braces, fabric stiffening panels, and upper extremity orthoses. KYDEX® T Sheet for O&P provides rigidity, excellent formability, and mar-resistance. Custom cuts. Comes in many standard and custom colors. In stock, ready to ship. Stocked materials typically ship in 2-5 business days. Can’t find what you need? Get a quote.